Air conditioning equipment



Jan. 7, 1941. N GYMNAlTES 2,227,544

AIR C(SNDITIONING EQUIPMENT Filed April 21, 1938 4 Sheets-Sheet 1 fizaezaaaz' Was 014$ 577 016 17756 jjb fo zze a Jan. 7, 1941. N. GYMNAITES 2,227,544

AIR CONDITIONIENG EQUIPMENT Filed April 21, 1938 4 Sheets-Sheet 3 i nanuzznnnnfl llllllllllllllllllguy Jan. 7, 1941. N. GYMNAITES 7,544

AIR CONDITIONING EQUIPMENT Filed April 21, 193B 4 Sheets-Sheet 4 Aaiprza a e iiim 5/ Patented Jan. 7. 1941' A 2 UNITED STATES PATENT OFFICE 7 Am CONDI'IiI SZZIiZ EQI HPDIENT Nickolas Gymnaites, Venture, Calif, Application April 21, 1938, Serial No. 203,332 1 (cl. 261-9) My invention relates to a machine in which a distinct separation of the flow of the whole the term air conditioning includes cleaning and body of air into an outer air mass, usually wet adding moisture to the air to be distributed in and saturated and the inner comparatively dry '2. room, building or the like, this incidentally mass. In a further step of the procedure this having a cooling action. A further feature is wet mass of air is forced over water cooling 5 using part of the equipment for air heating and pipes which may be used to cool the water before in a further alternative procedure with the same spraying. This mass driven outwardly is wasted general equipments positive refrigerating action by being discharged from the building or the may be developed. like where the device is used for air conditioning.

A main object and feature of my invention is My invention is illustrated in connection with i the construction of a machine in which a rela.- the accompanying drawings, in which: tively large volume of air is conveyed through Fig. 1 is a side elevation partly broken away a rotating cylinder where it is subjected to a of my equipment taken in the direction of the whirling and a centrifugal action. The flow of arrow I in Figs. 3 and 5.

. air is divided. The portion having the flow Fig. 2 is a front elevation broken away taken 15 through the center is sucked or blown through. in the direction of the arrow 2 of Fig; 1.

a set of coils or the like which maybe used'for Fig. 3 is a vertical transverse section on the cooling by water, heating by hot water or refrigline 3-} of Fig. 1 omittin the outer parts of erated by passing a refrigerant through these the machine, showing the heat transfer radiator.

coils. Such air is then forced by a blower pref- Fig. 4 is a vertical transverse section on the 20 r y f rif gal type to ducts leading line 4-4 of Fig. 1 in the direction of the arrows into the room or building. In connection with showing the centrifugal fan construction. this feature of the air flow my invention in- Fig. 5 is a vertical transverse section on the cludes a construction by spraying cool water line 5-5 of Fig. 1 in the direction of the arrows.

. t th ai entering the cylinder or drum and Fig. 6 is a transverse section on the line 6-6 25 providing devices for breaking the spray into of Fig. 1 of a typical composite dispersion screen. minute particles in the nature of. a mist. This Fig. 7 is a diagram illustrating the direction immediately brings the complete flow of sprayed of air flow of the complete machine. water into intimate contact and mixture with Fig. 8 is a diagram showing the water circulaa large volume of air. A further feature of tion for air conditioning with water cooling. 30

the operation is due to the centrifugal swirl of Fig. 9 is a diagram showing the water circulathe air with the water vapors or mist developing tion for air heating.

- a centrifugal separation of the larger globules of g- 10 is a diagram Showing t Water circulawater, causing the particles of the mist to be tion and the refrigerated fluid circulation for forced outwardly by centrifugal action. Part of air conditioning with refrigeration. 35

this water contacts the inside surface of the Fig- 11 is a diagram sho the W t flow cylinder or drum and is discharged outwardly' and the flow of the refrigerant and including through perforations. A third feature of the the various valves to transform the machine to action is that the centrifugal separation of the any one of the three systems of Figs. 8, 9 and 10.

.40 larger particles of water and the excessively moist Referring first to the construction for the air 40 air by centrifugal action is that relatively dry flow as shown diagrammatically in Fig. 7, this air is drawn through the center of the rotating illustrates a. housing construction ll having a cylinder or drum to contact the coils which may floor l2, opposite side walls l3, 9. top It, a front be designated as a radiator. The flow of this wall l8 with a circular opening l9. Located relatively dry air through the radiator coils may within this housing there is a water tank 20 hav- 45 be utilized either to pre-cool the water of the ing its upper edge having its top defined by a spray to a sorb heat when hot water flows top wall 2|. Also spaced below the top ii there through the radiator or to give up heat and is an upper horizontal partition 22. It is prefbecome chilled when the equipment is used for erable to make the partitions 2| and 22 in the refrigerating purposes. A further characteristic form of a stationary cylinder concentricwith and feature of my invention involves subjecting the rotor hereunder detailed, thus leaving an the moist air carrying usually relatively large outside air space. This cylinder is designated globules of water thrown outwardly by the cenby the numeral 23 and terminates at its inner trifugal force to a centrifugal fan or blower edge 24.

which gives a positive urge outwardly, making A rotor assembly 25 hasa suitable shaft, the 55 designated. A cylinder or drum 28 is secured axle of which is suitably journaled on the axis 26, the axle or shaft being suitably journaled.

fan 21 and a rearward fan 28. These also function to break up the spray of water hereunder to these fans at their outer ends or to other suitable means connected with the shaft. The drum has a series of perforations 38 permitting outlet of air and also water as hereunder detailed. A waste air centrifugal fan 35 is secured to the drum positioned inwardly from the fan 28 and is designed to discharge the air outwardly by the centrifugal action of such fan.

A stationary contracted housing 48 may be cylindrical with a flared edge wall 4|. A partition 42 connects with the neck or contracted housing 48 and forms a definite obstruction to the rearward flow of the circulating air outside of the drum or cylinder 28. There is also a rear transverse partition 43. A fluid tank 45 for a refrigerant is preferably located above the stationary housing 48 and resting on the top of the partitions 42 and 43. There is thus a dead air space 48 defined by the housing, the partitions 42' and 43, the bottom I2 and the fluid tank 45. There is an end transverse wall 41 spaced outwardly from the partition 43. This leaves an outside space 48 outside of a centrifugal fan hereunder detailed. A high speed centrifugal fan 58 is mounted on a hub 5| journaled on the shaft and rotated by any suitable means at a much higher velocity than the shaft. This includes a transverse baffle wall 52 and the radially extending blades 53. There is a discharge duct 54 for the air to be used in a room or building and a waste air duct or conduit 55 conn'ected to the wall M or one of the outer walls I3. This has a control damper 56 utilized to shut off or control the opening of the waste air duct.

The direction of flow of air is indicated by the arrows in Fig. 7 in which the inflow of air is indicated by the arrow 68, this being drawn from the room or suitable place in the building. This enters through the opening IS in the end wall I8. The 'air stream divides, a major portion thereof follows the arrow 8| through the cylinder or drum 28 being blown by the fans 2'! and 28 which act as water heaters as hereunder detailed. This air is given a rotational whirl due to the shape of the fan blades and also by the drum 28 rotating. This causes a certain amount of the air to be carried outwardly by the centrifugal action in the direction of the arrows 62 through the perforations 38. Such air stream then joins or mixes with an outer air stream 83 diverted outwardly after entering at the opening l8. There is then an outer air flow around the drum in the direction of the arrows 84. Such air is driven by the centrifugal fan 35 outwardly as indicated by the arrows 85 whence at the top and sides it follows a channel or space between the, cylinder 23 concentric with the drum 28 and defined as including the partitions 2| and 22 for it will be understood that if desired the air confining structure could be rectangular if it is desirable to have, the outer housing rectangular in vertical cross section. This air follows the direction of the arrow 66, 61,88 and is discharged as indicated by the arrow 88 to the waste duct The flow may be controlled by the damper cated by the arrows I8 by the flare 4| and passes longitudinally as shown by the arrow 1| through the contracted housing or what might be termed a throat 48. This air is blocked by the transverse end wall 41 and is caught by the blades 53 of the centrifugal fan 58, this having the baille wall 52 causing an outward flow of the air following the arrow 12. The air pressure built up in the space 48 causes a discharge following the arrow 13 through the duct 54 for conditioned air leading to a room or building. This also may be controlled by a damper if desired.

Dealing with the water flow used in conjunction with the air circulating system above described of Fig. 7, consideration is next directed to Fig. 8. The water tank 28 as above mentioned is installed in the bottom or lower part of the housing. This may be fed and kept supplied with water from any suitable source, the water level being preferably maintained by a float or equivalent valve. The pipe circuit designated by the-assembly numeral 88 employs a supply pipe 8| from the tank to a water pump 82. This pump is driven in any suitable means and preferably by a connection to the shaft which operates the blower and centrifugal fans and the rotor above described. The pump isgenerally in a lower position in the cabinet or may be located outside of the fan and from the pump there is a riser pipe 83, a horizontal run 84, a drop pipe 85 leading to a water cooling coil 88. This coil may be'quite an extensive arrangement of piping and is located outside of the drum 28, between such drum and the stationary cylinder 23 or where distinct partitions are used above the lower partition 2| and below the upper partition 22. The coils are thus located to be directly in the air draft indicated at 84 and in line with the air fiow through the perforations 38 in the drum 28. A chilled water pipe 8| forms a partial return being connected to a heat transfer radiator 85. In this case the radiator functions with cool water to cool the air passing over such coils or radiator, the radiator being located in the throat or contracted portion 48 of the construction. In this radiator manifestly the temperature of the chilled water is usually increased as it absorbs heat from the air flow. A downwardly extending discharge pipe 86 continues with a horizontal lead 81, a riser pipe 88 terminating in a water jet I88. This is positioned closely contiguous to the outer end of the rotor drum 28 and sprays the water directly into such drum in such a position that it is caught by the blades of the fan 21 and broken up into small particles or atomized. Other devices for breaking up the water are described in more detail hereunder. Such water spray indicated by the arrows |8| develops a centrifugal swirl with the rotor cylinder 28 and a considerable portion of the large globules pass outwardly through the perforations in the drum.

These collect in the cylinder 23 or drop directly either water we refrigerant, the water or the refrigerant is circulated through the coils 88 which encircle the cylinder or drum. The water air is also carried outwardly where it has a sumcient moisture content to develop a centrifugal action and travel outwardly by centrifugal force. This air driven outwardly is somewhat cooled by the evaporation of the water into the air and also a mist of water and air is developed. The centrifugal blower 35 mounted on the rotor sucks this air and the water content thereof together with free drops of water to a certain extent rearwardly along the outside of the drum or cylinder 29. In addition air entering through the opening IS in the front of the housing is sucked rearwardly through the cooling coils by the centrifugal fan 35. This air is relatively dry. Such action creates a cooling of the coils 50 by the impact of the directly cooled air, the air containing a certain content of moisture and in addition water in the form of droplets or a film is deposited on the coils 90. The relatively dry air sucked rearwardly on the outside of the drum evaporates a certain amount of this water from the outside of the coils thus causing a heat transfer and a cooling of the coils and the water contained therein. All of the air whether moist or dry and the surplus moisture is discharged by the centrifugal fan 35 above the partition 23 and outwardly through the duct 55. This air may be considered as wasted so far as the direct ventilation and treatment of the air used in the room or building is concerned.

The relatively dry air which has not taken up much moisture from the water spray Hill and which has not been driven outwardly by centrifugal action flows longitudinally in the drum and mainly along the axis of the drum. This air is diverted inwardly by the flange ll and through the contracted neck defined by the structure 40 where it flows over the radiator or heat transfer coils 95. The water flowing through these coils has been cooled by the cooling coils 90 where water and air cooling is used and thus there is a heat transfer between the relatively dry air and the cool water in the radiator 95. This causes a cooling of this relatively dry air which is then sucked through the equipment by the blower 50 constructed of a centrifugal type and blown outwardly through the ventilating duct- 54 to the room to be ventilated. Manifestly'where a positive refrigerating plant is utilized on account of the refrigerant in the radiator being decidedly colder than the air, the air flowing through the neck 40 is materially cooled. Also where the water is heated as in Fig. 9 and flows through the radiator 95, such water is quite decidedly hotter than the air flowing over. the radiator through the neck 40 and manifestly heats such air. i

When'the device is used as an air heater, suitable valves and the general piping system are closed and others opened as hereunder detailed to develop the circulation of the diagram of Fig. 1 9. This employs the same water tank 20. A suitable heating means I05 illustrated as a gas burner is positioned contiguous to the tank and may be used to heat the water supply. The hot water then flows through part of the piping shown in. Fig. 8, that is, in the supply pipe 8| to the pump 82 through the riser 03 and part of the pipe 84 designated by the assembly numeral I05. There is then a drop pipe Ill'lconnecting with the heat transfer radiator 95. From this through the medium of the drop pipe 95 part of the horizontal run 91 indicated by the numeral I08, the water is conveyed back to the water tank through the drain pipe 09. The direction of flow of the water in Figs. 8 and 9 is indicated by the solid arrows.

When the machine is used as in Fig. 9 to supply heated air to a room or building, it is apparent that the water supply of the spray Hi0 may be used or not dependent on, the condition of the humidity of the air. In many districts of the country cold weather requiring internal house housing isfrequently accompanied by ,rain producing a large humidity ratio in the external air. As this airis drawn into the building by the usual ventilation, thus the air in the building is sufliciently moist and the water spray may be discontinued. Also, the water cooling coils 90 are cut out by closing valves, hence the radiator receives the hot water at a desired temperature which with an open tank of course must be below the chilling point and is then used to heat the v air draft which blows through the throat 40 in the direction of the arrow H of 7. In this case it is desirable to close the damper 56 thus blocking the outflow of air into the waste duct 55 and hence even with the rotor and air fans 21 and 28 operating, practically all of the air flow is directed through the throat 40 and hence into intimate contact with the radiator. The heated air is then driven under pressure by the centrifugal fan 50 through the duct 54. It is obvious that if the air does not require to be conveyed long distances through the duct 54 or; a-

large volume of air supplied that the rotor may be brought to rest. This stops the blowing action of the fans 21 and 28 and also stops the centrifugal fan 35 causing the total flow of air to be developed by the centrifugal fan 50. It will thus be seen that with a simple change of valve connections as hereunder detailed and by heating the water, that the device may be transformed from an air cooling and moistening to a pipe I l l connecting to the pipe 91 which in Fig. 8 is connected to theradiator 95. The standplpe' 98 connected to 91 leads to the spray. The direction of flow of the water is indicated by the solid arrows ll 2, the direction of the spray water by the arrows Hi. In this case the rotor is operating, the water 'is broken up into fine particles such as a mist, the large particles being carried out with the outwardly flow of air by centrifugal action and the central draft of air with a certain amount .of the moisture is driven through the throat 4B and the heat transfer radiator 95. This however functions as a positive refrigerator in this case.

A refrigerating circuit designated by the numeral I20 employs the fluid tank 45 which is a closed tank and holds the liquid refrigerant. This tank is connected by a drop pipe I2I to a pressure release valve I22 from which there is an expansion pipe I23. This leads to the heat transfer radiator 95 where the liquid refrigerant expands into the gas rapidly extracting heat from the air blown through the throat 40 and thus through the radiator coils .or other devices 95. The waste gas flows through the return pipes I24 and I25 to the gas compressor I26. After the compression of the gas back to the liquid form it is pumped by the compressor upwardly through the riser pipe I21, thence through connection pipes I28, I29 and the pipe I30 which includes a portion of the pipe 84 of Fig. 8and I06 of Fig. 9. The continued flow leads through the drop pipe 85, flows through the cooling coils 90, utilizes part of the return pipe 9|, the riser I3I connected thereto leading back to the refrigerant fluid tank 45. When the valves hereunder detailed are set to include the two distinct flow circuits, that of the spray water and of the refrigerant, it will be seen that a large proportion of the water circuit pipes may be used for the refrigerant and in this case the radiator has a reversal function over that of Fig. 9 in that there is a positive cooling and refrigerating action on the air passing through the throat 40. This air is driven by the fans 21 and 28 and is activated by these fans and the drum 30 into a circular rotation while travelling longitudinally. The water sprayed through the spray nozzle I00 is for a major portion discharged outwardly by a centrifugal action, the moist air passing over the water cooling coil 90, now used to cool the refrigerant liquid, chills such liquid prior to its return to the pipe 9| and the standpipe IM to the fluid tank 45. v The liquid refrigerant uses a good portion of the piping system and has its own distinct circuit, the compressor being a unit which may be brought into operation when desired and can be driven by a separate power equipment or from the shaft driving the rotor and the various blower and centrifugal fans. It will of course be understood that if desired the water spray into the air may be discontinued during refrigeration operation should the air be sufficiently moist. In fact, it may be necessary to discontinue this air moistening where there is danger of the refrigeration causing a precipitation of the water in the air due to the increased relative humidity at lower temperatures.

In Fig. 11 I illustrate the water and refrigerant flow diagram for all of the systems. The various pipes, fluid leads, etc. are designated by the numerals applying to Figs. 8, 9 andlO, how-. ever some of these numerals indicate different portions of the same piping connection. The

manner in which one system of operation may of the valves properly located in various pipes.

For sake of convenience these are designated by letter. Presuming it is desired to use the equipment as an air conditioner by adding moisture and chilling by water cooling in accordance with the system of Fig. 8, the following valves would be opened,- leading firstly from the spray jet I00. In the pipe 96 there is located a valve A, this being between the joint connecting the pipes III and I24 to 90. When this valve is opened it forms a connection to the radiator 95. The valve B in the pipe 9| formsa connection to the water cooling coil 90. A further connection through the open valve C and the open valve G connects with the pump. The pump may be shut of! from the water tank by the valve I. In this procedure all of the other valves are closed.

When operating the system as an air heater by transference of heat from the water in accordance with the procedure of Fig. 9, the valve I connecting the pump and the water tank is open, the heater I05 of the tank is operated to heat the water. From the pump there is a flow through the pipe 83, the open valve G, the pipe I06, the open valve E in the pipe I01, leading to the radiator 95. A return valve H in the connection I08 and I09 leading from 96 is open. This returns the chilled water back to the water tank for again re-heating. In this circuit all of the other valves are closed. When the equipment is used for refrigerating, the cycle of the refrigerant is substantially as follows, having reference both to Figs. 10 and 11. The liquid refrigerant from the tank 45 passes through the pressure reduction valve I22 in the lead I2I,-thence through the open valve F, communicating by the pipe I23 with the heat transfer radiator 95, thence by the pipe 96, the open valve K in the connection I24 ,and I25 to the compressor I26. From the compressor there is a flow through the pipe I21 and I28, the open valve L, the connections I29 and I30, the open valve C, through the portion of the pipe 84 and leading to the cooler coils used in other procedures for water. There is then a return through the open valve D and the pipe IOI to the fluid tank. All of the othervalves having a connection for circulating through the coils 90 are closed. This gives a complete cycle for the refrigerant.

When in refrigerating it is desired to spray water into the air, this is pumped from the water tank through the open valve I by the pump 82, thence through the pipe connection II I, the open valve J, the connection 91, 98 to the spray nozzle I00. The water from the spray which is not absorbed by the air is returned by gravity into the tank 20. In this procedure all of the other valves relating to the flow caused by the pump and to and from the water tank are closed-except those designated as being open. The various valves used in open position for the several modes of operation are indicated in the diagrams of Figs. 8, 9 and 10.

The mechanical set up of my equipment as to a suitable form is illustrated in the drawings,. Figs. 1 to 6 inclusive. In this, inside or connected with the housing structure I employ a front shaft support I50, this being located preferably immediately inside of the front wall I8 and the rear shaft support I5I shown as located immediately outside of the transverse end wall 41. The shaft I52 is mounted in suitable journals and at the rear end of the shaft there is a rotatable sleeve I53. The sleeve has a drive pulley I54 mounted thereon and the shaft has its own pulley I55. These have their respective belt drives I56 and I51 to the respective pulleys I 58 and I59 on the driving shaft I60 of" an electric motor IIII.

The rotor assembly 25 includes-the shaft and the drum or cylinder 29, these being illustrated as supported from the shaft by the blades of the forward and rear fans 21 and 28. Although in the diagrams only two sets of fans are shown, it is desirable to have additional fans such as indicated at I65, these being in part for the purpose of breaking up the globules of water into small particles. An additional structure for this purpose is to have one or more dispersing screens I86. These screens are preferably made in the manner illustrated in Fig. 8 having two opposite wire mesh screens I81 and III with a porous fabric I88 therebetween. This is secured to the shaft and to the drum in any suitable manner and hence rotates with the drum operating in part by the centrifugal action and by the air draft of the fans to convey the sprayed water through the dispensing screen and into the main portion of the drum. The centrifugal blower fan 35 is secured to the outside of drum adjacent its rear end and extends outwardly through a space I81 between the front transverse partition 42 and located in the base of the cabinet and it is intended that the upper surface of the water be always below the lower portion of the cylinder 28 or a partition such as II where this is utilized. 1

The centrifugal fan 88 is connected to the rotatable sleeve I88 and its forward side has a spider construction I18 connected thereto, a narrow portion of the blades indicated at III is also attached .to the sleeve, the transverse baflie wall 52 is in alignment with the spider, thus leaving the outwardly extending blades with openings or spaces indicated at I12. Thus the air passing through the throat 48 is acted upon by these blades of the centrifugal blower and driven outwardly.

In the water circulating system the pump 82 has a belt or equivalent drive I18 from the shaft of the motor I8I. in any suitable manner. The water cooling coils I 88 are preferably arranged by forming several banks I88 of pipes arranged in circles around the drum and inside of the cylinder 28. These are staggered so that the water discharged through prises-preferably zig-zag turns of pipe as shown at I85 of Fig. 3. These have horizontal banks I88 of a group of pipes with reverse turns I81. The pipes are assembled providing a central space I88 for the passage of the shaft I52. It is also sor condenser I28 Ispreferably located in an extension I88 of the housing. This has a disengageable drive from the electric motor and has the piping connections arranged in a suitable manner to the tank 88 for the refrigerant fluid.

- This as above mentioned is preferably .located at I nection with the diagram drawings, it will be seen that the centrifugal blower fan 58 operates at a higher speed than the rotor having the drum, and the fans 21 and 28 with the various blades to break up the spray of water. As the water is sprayed in the end of the drum, it is broken up into fine particles, that is, atomized. thus forming a mist and being brought into in- The piping may be arranged timate contact with the air. Due to the centrifugal swirl developed by both the air and the water, the heavier particles of water are driven outwardly, contacting the drum 28 and being discharged through the perforations 88. This causes a spray of water to be directed at the cooling coil pipes 88. The drip from these pipes and the other portion of the water driven outwardly, drips intothe tank 28. The flow of air as illustrated in Fig. 7 shows a longitudinal draft of air passing over the bank of pipes 88 and also the air with the water driven outwardly through the drum. This air is acted on by. the centrifugal blower 85 and discharged outside of the cylinder 28 and having its only outlet through the waste duct 85 which is controlled by a damper 58. This gets rid of the excessively moist air. The drier air following along the line of the shaft I82 and the central portion of the drum is caught by the inwardly flared edge. of the stationary contracted or throat structure 48, this extending slightly inside of the rear end of the cylinder 28. Such air in passing through the throat is brought into intimate contact with the pipes or other structure of the refrigerator 85 where it is subjected to a cooling action in air cooling by water to a heating action when heated by water or to refrigeration when the refrigerant-is pumped through the piping system. The centrifugal blower 88 is also operative to develop a suction aiding the flow of air through the throat and developing a sufiicient pressure in the space 88 surrounding the blower fan to discharge the air through the duct 58 which may also be controlled by a damper, this leading to a room or building to be ventilated with temperature and humidity control by the equipment.

Although I have described my invention as relatingto an air conditioning equipment, it will be much as shown in Fig. 10 from the water tank 28 by means of the pump 82 to the spray jet I88. For instance presuming it is desired to cool a hot liquid or hot gas, these could be supplied under pressure if desired to the pipe I2I,' note Fig. 18, this by omitting the fluid tanl: 45, thence either with or without the pressure reduction valve ,I22 and having the valve F open, them would be a flow through the pipe I28, the

refrigerator coil 85, the connections 86, open valve K I24, I28 to the devicedeslgnated as the compressor I28. This if desired could be a positive pump drawing in the hot liquid or gas by suction or it could be omitted and merely form a connection between the pipes I28 and I21. The flow then continues through the pipes I28, I28, I88, 88, and the cooling coils '88, whence it is subject to the water spray action with a flow of air.v The cooled liquid is then discharged through the pipe 8I and I ii to any suitable discharge connection omitting the fluid tank 45.

with this or other modifications the device may function in addition as a liquid and gas cooler.

Various changes may be made in the details of the construction without departing from the spirit or scope of the invention as defined by the appended claims.

I claim:

1. In an air conditioning equipment the combination of a housing structure having an opening at one end, a rotatable perforated cylinder extending longitudinally of the housing and in axial alignment with the opening, air fans inside the cylinder, a stationary neck structure at the to develop a rotational swirl of the air and the water to discharge some of the water and air outwardly through the said perforations, the first centrifugal blower being adapted to discharge such air and the second centrifugal blower being adapted to discharge the air flowing centrally through the cylinder, the housing structure having a water tank in the bottom thereof to receive the surplus water from the spray, a piping system including connections from the water tank, a pump, a heat transfer radiator positioned in the neck and a piping connection from the radiator to the water spray.

2. In a device as described, the combination 4. In an air conditioning equipment, the combination of a housing structure having an openof a housing structure having an opening at one end, a perforated rotatable cylinder having an opening at both ends, means in the cylinder to develop a circularflow of air as to the axis of the cylinder and at the same time a motion of translation through the cylinder from the inlet to the discharge end, a stationary neck structure positioned adjacent thedischarge end of the cylinder, a heat transfer radiator for fluids to flow therethrough positioned in the stationary neck, a blower positioned at the discharge L end of the neck with means to conduct the air flow from such blower and means to develop a flow of fluid through the said radiator, a cooling coil for fluid surrounding the cylinder, a water spray device positioned adjacent the inlet end of the cylinder whereby water sprayed into the air is adapted to undergo a circular motion with the rotating air with part of the water being driven out through the perforations to contact the cooling coil and means to flow the fluid through the cooling coil in addition to the heat transfer radiator.

3. In an air conditioning equipment, thecombination of a housing structure with an opening at one end, a water spray positioned adjacent such end, a rotating perforated cylinder mounted axially in the housing, a cylindrical blower connected to the exterior of the cylinder to create an air draft on the exterior thereof, there being an outlet for such air in the housing, an air blowing means positioned to blow the spray longitudinally through the cylinder and through the perforations thereof, means on the outside of the cylinder to discharge part of the air, a main outlet for the air at the end opposite the spray, the housing having a water tank at the bottom to receive the drip of excess water, a piping connection from the tank to the water spray with a pump pumping the water from the tank, the piping system including a water cooling coil positioned outside of, the rotating cylinder and extending longitudinally thereof in a position to be subject to the flowof'air on the exterior of the cylinder outwardly through the perforations of the cylinder and acted upon by the first centrifugal blower.

ing at one end, a rotatable perforated cylinder extending longitudinally of the housing and having an inlet aligned with the opening of the housing, air fans inside the cylinder, a stationary neck structure at the discharge end of the cylinder, a centrifugal blower at the discharge end of the neck with a discharge duct leading therefrom, a radiator for fluids located in the, stationary neck with means to flow a fluid therethrough, a

water tank located in the lower part of thehousing, a pump connected thereto, a cooling coil surrounding the perforated cylinder and connected to the pump, the discharge from the cooling coil having a connection to the radiator,

a spray jet located at the intake end of the per-- forated cylinder and a liquid connection from the radiator to the spray jet, a second centrifugal blower connected to the exterior of the perforated cylinder adjacent the forward end of the stationary neck and a discharge duct from the second centrifugal blower whereby a portion of the water spray with air is discharged by the second centrifugal blower developing a flow of moist air over the cooling coils surrounding the perforated cylinder.

5. In a device as described, the combination of a housing structure having an opening at one end, a perforated rotatable cylinder with openings at both ends aligned with the opening of the housing means in the cylinder to develop a circular flow of air as to the axis of the cylinder and at the same time a motion of translation, a stationary neck structure positioned adjacent the discharge end of the cylinder, a heat transfer radiator for flow of fluids therethrough positioned in the stationary neck, a blower positioned at the discharge end of the neck with an air discharge means and means to develop means to flow the fluid through the cooling coil in addition to the heat transfer radiator.

6. In air conditioning equipment the combination of a housing structure having an openingat one end, a rotatable perforated cylinder extending longitudinally of the housing and in axial alignment with the opening, air fans inside the cylinder, a stationary neck structure at the discharge end of the cylinder, a centrifugal blower connected to the exterior of the cylinder to create an air draft on the exterior of such cylinder, a second centrifugal blower located at the discharge end of said neck, means to spray moisture adjacent the air intake end of the cylinder only, the fans of the cylinder being adapted to develop a rotational swirl of the air and the water to discharge some of the water and air outwardly through the said perforations, the first centrifugal blower being adapted to .dis-. charge such air and the second centrifugal blower being adapted to discharge the air flowing centrally through the cylinder, the housing having a water tankat the bottom to receive the drip of excess water, a piping connection from the tank to the water spray with a pump pumping the water from the tank, the piping system including a water cooling coil positioned outside of the rotating cylinder and extending longitudi nally thereof in a position to be'sub iect to the flow of air on the exterior of the cylinder outcharge end of the neck with a duct for the discharge of airtherefrom, a radiator for fluids located in the stationary neck with means to flow a fluid therethrough whereby air blown longitudinally through the cylinder and the stationary neck flows through the said radiator and is discharged by the centrifugal blower, a water tank located in the lower part of the housing, a pump connected thereto, a cooling coil surrounding the perforated cylinder and connected to the pump, the discharge from the cooling coil having a connection to the radiator, a spray jet located at the intake end of the perforated cylinder and a liquid connection from the radiator to the spray jet, a second centrifugal blower connected to the exterior of the perforated cylinder adjacent the forward end of the stationary neck and a discharge duct from the second centrifugal blower whereby a portion oi the water'spray with air is discharged by the second centrifugal blower developing a flow of moist air over the cooling coils surrounding the perforated cylinder.

NICKOLAS GYMNAITES 

